Where do you think I could sell this brand new dress I never wore ?

I bought it a size too small being stupid.. it’s a 5 and I am a 6/7 .. I didn’t lose the weight and the ball is in two weeks.. I’m sucking in here and my husband struggled to zipper it for me I’ve gained weight since too and the slit looks weird bc my hips are wider and thighs are big and my belly is just bloated and ehh and a waste trainer is just too uncomfortable. It was final sale for $130 and my husband will be pissed if I just get another one without selling this one 🤦🏽‍♀️🙁 and what to do.. any suggestions on where I could possibly sell it?